/Engine/Source/Runtime/Renderer/Public/InstanceCulling/InstanceCullingContext.h
Add command to cull a range of instances for the given mesh draw command index. Multiple commands may add to the same slot, ordering is not preserved.
void AddInstancesToDrawCommand ( uint32 IndirectArgsOffset, int32 InstanceDataOffset, uint32 RunOffset, uint32 NumInstances, [EInstanceFlags](API\Runtime\Renderer\InstanceCulling\FInstanceCullingContext\EInstanceFlags) InstanceFlags )